Alexandrite 1.56 ct – Rare Color Change, Oval Cut, AIG Certified

1.56 ct Natural color change gemstone alexandrite in oval shape

Alexandrite 1.56 ct – Rare Color Change, Oval Cut, AIG Certified

Name: Alexandrite 1.56 ct – Rare Color Change, Oval Cut, AIG Certified
Brand: SOSNA Gems & Jewellery
SKU: 1900275
Price: 43320.00 CZK
Availability: InStock

43.320,00 CZK

Gemstone Specification

Carat Weight 1.56

Dimensions 7.94 x 5.87 x 4.29 mm

Color Greenish Yellow to Purple

Clarity Eye Clean

Shape Oval

Treatment No Treatment

Origin Sri Lanka (Ceylon)

Certification AIG

This 1.56 carat alexandrite is a rare marvel, showcasing a dramatic color shift from greenish-blue to purplish-red under changing light. Its elegant oval cut accentuates both color play and brilliance, while the VS clarity and untreated nature speak to its natural excellence. Accompanied by an AIG certificate, this gemstone is a true connoisseur’s piece—captivating, rare, and utterly unique.

Alexandrite 1.56 ct – Rare Color Change, Oval Cut, AIG Certified

43.320,00 CZK

From gemstone to jewelry

This example illustrates one possible way a gemstone may be developed into a bespoke piece. Final design is always defined individually, based on the stone and its natural character.

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Each gemstone is professionally examined and accompanied by clear gemological information regarding its characteristics, treatments, and origin.

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Gemological overview

Technical and gemological information about this gemstone variety.

Gemological profile

Alexandrite is a rare color-changing variety of chrysoberyl, valued for its distinct ability to shift color under different lighting conditions. In natural daylight, alexandrite typically appears green to bluish-green, while under incandescent light it displays red to purplish-red hues, a phenomenon known as color change.
Chemically composed of beryllium aluminum oxide (BeAl₂O₄), alexandrite crystallizes in the orthorhombic crystal system and belongs to the oxide mineral group. In gem-quality specimens, it typically displays a vitreous luster with transparent clarity.
The refractive index of alexandrite generally ranges from approximately 1.741 to 1.760, contributing to a balanced brilliance that supports, rather than overwhelms, its color-changing behavior. Natural alexandrite is found in a limited number of locations worldwide, including Russia, Brazil, Sri Lanka, and parts of East Africa.

Durability & suitability

With a hardness of approximately 8.5 on the Mohs scale, alexandrite offers very good durability suitable for everyday jewelry when properly set and worn with standard care. Its lack of cleavage contributes to strong resistance against impact and abrasion compared to many other color-changing gemstones.
Alexandrite performs well in rings, pendants, earrings, and bracelets, including designs intended for regular wear. Its combination of durability and visual complexity makes it suitable for both everyday jewelry and refined, statement-oriented designs where lighting conditions can enhance its unique character.

Treatments & authenticity

Natural alexandrite is most commonly found without the need for enhancement. Treatments are generally uncommon, as the gemstone’s color-changing properties are inherent to its natural crystal structure.
Any treatments or enhancements, if present, are always clearly stated for each individual gemstone. Every stone is professionally examined, and transparent disclosure is regarded as a fundamental part of responsible gemological practice, allowing clients to make informed and confident decisions.

Our approach to gemstones

We focus primarily on natural, untreated gemstones, valued for their authenticity and inherent beauty.
Any treatments or enhancements are always clearly disclosed, allowing our clients to make informed decisions based on transparent gemological standards.

Sosna Gems is not a licensed financial advisor. Gemstones are collectibles, not securities. Past performance is not indicative of future results. Legal & risk disclosure .